Valve and valve-seat.



No. 730,559. PATENTED JUNE 9, 1903. W. S. MOLEOD. VALVE AND VALVE SEAT. APPLmATIoN FILED EEB. 12, 1903. No MODEL.

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PATENT OFFICE.

WILLIAM S. AMCLEOD, OFfKINGSVI-LIIE, CANADA.

VALVE AND VALVE-SEAT.

SPECIFICATION fornng part of Letters Patent No. 730,559, dated June 9, 1.903. Application iiled February 12, 1903. Serial Nox M3066. No model.)v

To all whom it may concern:

Be it known that I, WILLIAM S. MCLEOD, a subject of the King of Great Britain, resid- 'ing at Kingsville, in the Province of Ontario and Dominion of Canada, have invented certain new and useful Improvements in Valves use in pumps of that character described Vin Letters Patent of the United States No. 308,509, granted' to me November 25, 1884,

' and in Letters Patent of the United States No. 678,009, granted to me July 9, 1901; and it consists in the peculiar-construction and combination of devices hereinafter described and claimed.

In the accompanying drawings, Figure i is 'a sectional View of a pumpprovided with valves and valve-seats embodying my improvements. Fig. 2 isa detail sectional view of one of my improved valves and valve-seats. Fig. 3 is a detail elevation of the same.

Referring to Fig. l of the drawings, 2 indicates the cylinder, which is seated in the upper and lower cylinder -heads 3 4, respectively, said heads being secured together by clamping-rods 5. Pipes 6 and? unite at their lower ends with heads 8 and at their upper ends with heads 9, said heads being adapted to unite with and to be secured to the cylinder-heads 3 4 by means of clamping-rods l0. In the present adaptation of the pump my improved valves are located at the conjnncture of these heads.

I will now describe the valves which constitute my present invention.

A plate d is adapted to be placed between the opposing sides of two of the heads of the pump and to be clamped between them by the rods l0. Near its upper end said plate, which is in practice a casting, is formed integral with a boss b, which projects from one side thereof and is recessed, as at c, the said recess extending to the opposite side of the said plate and the latter being formed with flanges d at the Vvertical sides and horizontal upper side of said recess. Said plate a is further provided near its lower end onits opposite sides with flanges e to bear on the heads, which are clamped together by the rods l0. Said flanges d and the said boss h also bear against the inner sides ot' these heads, so that thel plate a is firmly seated in place between the said heads. In the outer side of the `said lug 'h is an opening g. `The plate q. is provided near its lower end with a port h, on lhe inner side of which is a seat i, the same being an annulus formed integral with the plate a, having its inner side inclined upwardly toward the said plate, and hence disposed angnlarly with reference thereto.

A yoke It is seated in the recess c and is detahably secured in the said recess to the boss h by a screw m, which extends through the openingg and engages a threaded opening in said yoke. Thelatter is provided with with a pair of lugs n, which are preferably formed integral therewith, said yoke and` said lugsbeing a single casting.

A Valve 0 is adapted to lit snugly on the seat i and to coactr therewith to open and close the port h. Saidvalve has on its outer side at its center a substantially semispherical boss p, at the center ol which is an outstanding cylindrical stud 9^, which has a screw-threaded bore s.

The carrier element t for the valve is provided with a pair of angnlarly-disposed arms La o, the former depending, lying in an approximately vertical position, having a substantially semispherical socketw on its inner side at its lower end to receive the correspondingly-shaped boss p, with which the valve is provided, and having a cylindrical bore to receive the stud r of said valve. A screw y engages the threaded stem or stud r of the valve and its head engages the outer side of the arm u, Vand hence the valve is attached to said arm of the carrier element. The'arm fu ofy the'carrier element, which is substantially horizontally disposed, is widened and bifurcated to form lugs e', which engage the outer sides of the lugs n of yoke k and are pivotally connected thereto by a pin or other axial element A, as shown, and hence-pivotal connection is eiected between the valve-carrier element and the yoke, which is detachably connected to the plate a and housed in the -recess c thereof, as will be understood. It

IOO

Will be understood, further, that owing to the angulaiconstruction of the valve-carrier elementtaud the construction of the plate a with the recess c and the provision of the pivotal yoke 7c the pivot of said valve-carrier element is on the inner side thereof and spaced from the center of gravity thereof, and the valve carried by the said carrier element is wholly to one side of the perpendicular plane of said pivot, and hence said valve-carrier tby its own gravity and that of the valve keeps the latter normally in close engagement with the valve-seat.

The provision ot' the recess in the plate a enables thearm fu of the valve-carrier element to be extended in length to increase the leverage and efficiency of said valve-carrier element, as will be understood.

Having thusfully described my invent-ion, what I claim as new, and desire to Secure by Letters Patent, is-

l. A plate a formed with a port, a valveseat around the same, on one side of the plate, a boss above the port and having a recess extending to that side of the plate provided With the valve-seat, a Valve-carrier element having angularly-disposed arms, one substantiallyhorizontal and the other depending therefrom, the horizontal arm having one end extending into the recess of the boss and pivotally secured therein, and a valve secured to the lower portion of the depending arm of the Valve carrier element and adapted to close by gravity and the leverage of the valvecarrier element against the valve-seat, substantially as described.

2. In a valve of the class described, the combination of a plate having a boss extending from one side thereof and recessed, said recess extending to the side of said plate opposite that on which the boss is disposed, said plate being further provided with a port, and a valve-seat around the same, a yoke detachably secured in the recess to the boss; a valvecarrier element having angnlarly-dsposed arms, one substantially horizontal and the other depending and substantially vertical, the former being pivotally connected to the yoke at a point to one side of the center of gravity of the said carrier, and a valve at the lower end of the depending arm of said carrier, said valve being adapted to close by gravity against the valve-seat, and being also disposed to one side of a vertical plane intersecting the pivotal axis of said carrier, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WILLI AM S. MCLEOD.

Witnesses:

W. A. SMITH, THOMAS G. HICKS. 

